Penfield & Smith president and CEO Hady Izadpanah. (courtesy photo)

Stantec, a large publicly traded design and consulting company, is acquiring Santa Barbara-based engineering firm Penfield & Smith. Terms of the deal, expected to close in October, were not disclosed.

Penfield & Smith has regional offices in Santa Barbara, Camarillo and Santa Maria. The company had revenue of $16 million last year, according to Business Times records, and 90 employees in the Tri-Counties, making it the fourth-largest engineering firm in the region.

Stantec is based in Alberta, Canada, and already has offices in Thousand Oaks and San Luis Obispo.

“California is an important market for our firm, and Penfield & Smith strengthens our community-development presence in the state with talented practitioners that share our passion for serving clients through exceptional work,” Stantec President and CEO Bob Gomes said in a statement. “In addition to supporting our Central Coast capabilities, Penfield & Smith will also complement our operations in Los Angeles and Ventura counties.”

Penfield & Smith was founded in 1946. Its notable projects include the 135-acre master planned marina community of Seabridge in Oxnard’s Channel Islands Harbor. The firm was the lead consultant on civil engineering, surveying and land planning for the project, which includes two retail centers and about 700 residential units.

In Santa Barbara, the firm provided project management assistance and construction management for the conversion of the 40-million gallon, open-air Sheffield Reservoir into below-ground water storage facilities with a public park above.

Penfield & Smith’s regional clients include Shea Homes, the county of Ventura, Comstock Homes, UC Santa Barbara, Caltrans, People’s Self-Help Housing and the cities of Santa Barbara, Ventura, Oxnard, and San Luis Obispo, among others, Stantec said.

Stantec is a global firm with 14,000 employees around the world and 6,500 in the United States. The company said it has more than 1,000 employees in California. Penfield & Smith will join its firm-wide infrastructure segment, it said.